DIY eleven step polished concrete
- DIY eleven step polished concrete consists of:
• First pass with metal bond diamonds to open the surface to expose the aggregate
• Second pass with metal bond diamonds to flatten the floor and prepare for surface repair
• Third pass with metal bond diamonds to apply the grouting and flatten repairs
• Fourth pass to remove the grouting with metal bond diamonds to prepare for densifier
• Fifth pass to remove the densifier with resin bond diamonds
• Four more passes with resin bond diamonds to achieve 800 grit polished concrete
• Two more passes with resin bond diamonds to achieve 3000 grit polished concrete
- A thin layer of densifier can also be applied between resin grinds up to 800 grit
The first pass of DIY eleven step polished concrete is commonly done with 16/20 grit metal bond diamond segments which leaves a coarse scratched surface with lower high spots. The second pass is with 30/40 grit metal bond diamonds also leaving a strong scratch pattern, but having removed the deeper scratches of the first pass and flattened the floor.
60/80 grit metal bond diamonds are used on the third pass while ‘grouting’ which grinds the concrete dust and grout adhesive that is used to wet the floor before the grinder into the small holes in the floor.
100/120 grit metal bond diamonds are used for the fourth pass to remove the grouting and may have to be repeated after another metal bond and grout pass if all the holes are not filled. After this pass a densifier is flooded onto the surface and allowed to dry overnight which will fill micro capillaries and harden the surface of the concrete. The densifier is removed with the fifth pass using 50 grit resin diamond segments.
The next six passes use resin bond diamond pads beginning at 100 grit and doubling the grit for each pass until 3,000 grit has been achieved. This will result in mechanically polished concrete with a flat, consistent shine and high distinction of image.